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In negative operon...

In negative operon

A

Co-repressor birds with repressor

B

Co-repressor dose not birds with repressor

C

Co-repressor birds with inducer

D

cAMP have negative effect on lac operon

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The correct Answer is:
A
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Explore conceptually related problems

A : Lac operon exerts negative control only. R: The operator is occupied by aporepressor during regulation.

Define an operon, giving an example, explain an inducible operon.

In inducible operon, regulatory gene synthesize:

Lac operon is

Lac Operon|Positive And Negative Regulation|Human Genome Project|Goals Of Human Genome Project

Type OF gene | | Operon system | | Inducible operon

operon system | | Inducible operon | | Repressible system

Study the schematic representation of the genes involved in the lac operon given below and answer the questions that follow : {:(p,i,p,o,z,y,a):} (a) Identify and name the regulatory gene in this operon. Explain its role in 'switching off' the operon. (b) Why is the lac operon's regulation referred to as negative regulation ? (c ) Name the inducer molecule and the products of the genes 'z' and 'y' of the operon. Write the functions of these gene products.

What is an operon ? Explain the functioning of lac operon when in an open state.

NTA MOCK TESTS-NTA NEET SET 67-BIOLOGY
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